Table 4 Oven-dry specific gravity of hot-pressed poplar, loss modulus (E″) data, and evaluation of statistical analysis at an α = 0.05 (at least three replicates)
Treatment | Oven-dry specific gravity (SG0,OD) | Loss modulus (E″ (GPa)) | Specific loss modulus (E″ (GPa)) | E″ peak (°C) | |||
|---|---|---|---|---|---|---|---|
30 °C | 120 °C | 30 °C | 120 °C |  | |||
Control | 0.35 ± 0.03 | C | 0.6 ± 0.2 | 0.5 ± 0.2 | 0.6 ± 0.2 | 0.5 ± 0.2 | 48 ± 10 |
9 %, 150 °C | 0.90 ± 0.06 | A | 0.6 ± 0.1 | 0.7 ± 0.1 | 0.6 ± 0.1 | 0.7 ± 0.1 | 47 ± 4 |
9 %, 200 °C | 0.90 ± 0.06 | A | 0.5 ± 0.1 | 0.6 ± 0.1 | 0.5 ± 0.1 | 0.6 ± 0.1 | 50 ± 6 |
9 %, 250 °C | 0.80 ± 0.10 | A,B | 0.5 ± 0.3 | 0.6 ± 0.2 | 0.5 ± 0.3 | 0.6 ± 0.2 | 50 ± 10 |
0 %, 150 °C | 0.64 ± 0.16 | B | 0.4 ± 0.1 | 0.5 ± 0.1 | 0.4 ± 0.1 | 0.5 ± 0.1 | 48 ± 3 |
0 %, 200 °C | 0.85 ± 0.12 | A | 0.6 ± 0.3 | 0.6 ± 0.2 | 0.6 ± 0.3 | 0.6 ± 0.2 | 50 ± 13 |
0 %, 250 °C | 0.80 ± 0.05 | A,B | 0.5 ± 0.1 | 0.5 ± 0.1 | 0.5 ± 0.1 | 0.5 ± 0.1 | – |
ANOVA p value | 0.0001 | – | – | 0.5220 | 0.7196 | 0.99 | |
ANCOVA | p value (treatment) | 0.5440 | 0.7794 | – | – | – | |
p value (SG) | 0.0125 | 0.0058 | – | – |  | ||